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      Spring Flash Sale

      Scientific American October 20, 1906

      The Canadian Pacific Railway Company's Irrigation Project

      • By Kittredge Wheeler on October 20, 1906

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      More in the October 20, 1906 issue of Scientific American
      • Completion of the Pennsylvania Double Tunnels
      • Recently Patented Inventions
      • An Electric Powderless, Smokeless, Flashless, and Soundless Gun
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